AS37912 IPRIO Corporation.

IPRIO-JP - IPRIO Corporation. · registered in Japan

IPv4 addresses2,0481 prefixes · <0.001% of announced IPv4

Rank in Japan#450largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#21,539of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS37912 in ASN lookup Look up an IP in this network (203.86.240.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

203.86.240.0/21

IPv6 prefixes

All 1 prefix.

2402:e800::/32

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AS63774#453 KAMOIKE-NET - Kamoike.net LLP2,048

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources